Adjustable arm-rest.



No. 7||,55o. Patented oct. 2|, |902.

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ADJUSTABLE ARM REST.

(Application flled Mar. 16, 1900.)

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UNITED STATES PATENT OFFICE.

CHRISTINE ZIBULSKI, OF MUNICH, GERMANY.

ADJUSTABLE ARM-REST.

SPECIFICATION forming part of Letters Patent No. 711,550, dated October 21, 1902.

Application filed March 16, 1900- Serial No. 9,002. (No modem To all whom it may concern.'

Be it known that I, CHRISTINE ZIBULSKI, Widow, ne ARNOLD, a subject of the Emperor of Germany, residinglat Munich, in the Kingdom of Bavaria, Germany, have invented certain new and useful Improvements in Adjustable Arm-Rests,0f which the following is a full, clear, and exact description.

My invention relates to vmeans whereby in operating upon or treating the arm of the human body a support may be furnished which is adjustable to suit all the different positions in which the physician may find it necessary to have the arm fixed; and my invention consists in the features and combinations of parts hereinafter fully described, and particularly pointed out in the claim.

In the accompanying drawings, Figure 1 represents a vertical sectional view of the apparatus with parts in elevation. Fig. 2 is a plan view of a section on the line A B of Fig. 1. Fig. 3 is a detailplan View of a supporting-arm and attached devices. Fig. 4 is a detail View of the arm-rest. Fig. 5 is a detail View, partly in section, of a detail part of the mechanism. Fig. 6 is a front View, partly in section, of Fig. 5.

The apparatus is supported upon a plate a. At one end of this plate is located a verticallychanneled support e, the edges of Which are toothed, as at eX in Figs. l to 5. An arm Z is adapted to slide vertically in this guide- Way and may be supported at any desired height by a catch-lever f, having a pin to engage the teeth eX, said catch-lever being pressed normally into engagement With the teeth of the channeled bar by a spring y. The bar Z carries at its upper end a shoulderrest lc. The base-plate a is provided with a curved channel c', forming a segment of a circle, and it is also provided With a channel or slot c2, radiating from the center from which the slot or channel c is struck. In the channel c2 a clamping-bolt is adj ustably arranged to hold an arm t in different positions in relation to the vertical channel e. The arm t is jointed by means of a bolt Qc toa section t, with Which it has a sliding connection. For this purpose the bolt a passes through a slot x in the part t. The arm t in turn is jointed by means of a bolt x2 to an arm t2, so that said arm t2 may have pivotal adjustment in relation to the arms t and t. The arm or section t2 has a bolt m3 passing through a slot thereof, the head of the same,

the arm-rest.

m4, as shown in Fig. 1, being arranged to bear against the under side of the overhanging flanges cx, forming the top of the channel or Way c.

By means of the slot n35, through which the bolt ac3 passes, it will be seen that the arm t2 can be adjusted, as shown in dotted lines in Fig. 2. Each ofthe sections t t' t2 has an arm extending vertically therefrom, (marked, respectively, p, q, and r.) These arms are slotted, i and through these slots bolts x @c7 ws pass, said bolts being connected, respectively, with standards 'm' n o', extending down, respectively, from the sections m, n, and o of By means of the boltsx6 m7 90B, which have'suitable Wing-nuts, the arm-rest may be adjusted vertically as desired. The section n is hinged at n2 to the Vsection m of the arm-rest, so as to have vertical adjustment, as shown in dotted lines in Fig. 1, and the section o is pivoted at x9 to the section n,

so that it may be adjusted horizontally at an inclination to the sections m and n, as shown in dotted lines in the plan View Fig. 3. To the under side of the section m of the armrest arms h are secured, extending toward the standard e, said arms being slotted for the passage of a clampingbolt m10. passes through the slot of an arm f', secured to the support post or standard l of the shoulder-bolster lo. The lower end of this slotted arm is connected to a link g.

By means of the described joints and connections of the various parts it will be seen that the arm-rest may be adjusted to various positions to suit the requirements of the operations to be performed.

I claim as my inventionj Supporting means for the human arm comprising sections m, n and o, adjustable supports p, q and r connected thereto, a baseplatehaving a circular and a straight slot therein, the arms or sections t, t', t2, adj ustably connected together and` adjustably mounted in the said slots, the said supports lo, q, fr, being connected with the sections or arms t, t', t2 and a bolster 7c with means for supporting the same adj ustably, substantially as described.

In witness whereof I subscribe my signature in presence of two Witnesses.

CHRISTINE ZIBULSKI.

Witnesses MENDEL MENDELSOHN, ANDREAS SORGDIENER.

This bolt 

